Your browser does not seem to support JavaScript syntax, but it does not matter here, the JavaScript syntax does not affect the content of the statement, such as the need to select the font size, IE6 Please use the keyboard to hold down the ALT key + V → X → (G) (L) larger (M) (S) smaller (A) to select the text size for you, and IE7 or Firefox browser can use the keyboard Ctrl + (+) zoom (-) zoom to change the word Type, such as the need to return to the previous page can use the Alt + left arrow key provided by the browser (←) shortcuts function.